(n.) A rare element of the chromium group, occurring in nature in the minerals molybdenite and wulfenite, and when reduced obtained as a hard, silver-white, difficulty fusible metal. Symbol Mo. Atomic weight 95.9.
Example Sentences:
(1) A knee simulator was used to study the wear of carbon fiber reinforced UHMWPE (Poly Two) (Poly Two is a registered trademark of Zimmer, USA) tibial and patellar components against Ti-6A1-4V, titanium nitride (TiN)-coated Ti-6A1-4V, and cobalt-chromium-molybdenum femoral components.
(2) This in vivo incorporation of tungsten was competitively hindered by molybdenum.
(3) Cystine increased the molybdenum requirement of Mol- mutants for nitrate reductase activity by at least 100-fold.
(4) Analysis of data on the influence of different metals (cadmium, cobalt, molybdenum) on the Drosophila melanogaster cells has revealed a considerable genotoxic effect of cadmium salts which manifests in the high percentage of cells elimination at the early stages of spermatogenesis--the premeiotic cells.
(5) The influence of the electric field of commerical frequency on metabolism and interorgan distribution of copper, molybdenum, iron and manganese was studied in the 4-month experiment on animals with their daily 30-minute exposition.
(6) Prevention of Enzootic Icterus by salts of molybdenum given orally confirms the identity.
(7) The molybdenum cofactor in a number of E. coli enzymes has been shown to contain GMP in addition to the metal-molybdopterin complex, with the GMP appended in pyrophosphate linkage to the terminal phosphate ester on the molybdopterin side chain.
(8) The accumulation of 99Mo (from 99MoO4(2-) into molybdenum-containing species in Clostridium pasteurianum was investigated to identify the molybdoprotein(s) involved in Mo metabolism.
(9) measurements at 35GHz near to 4.2K showed that the interaction has the same sign at all molybdenum orientations and is ferromagnetic.
(10) Molybdenum of both signal-giving species may be reduced with dithionite and reoxidized with nitrate.
(11) Gilded molybdenum-wire remains in the sclera and episclera without any reaction of the tissue.
(12) It is a molybdenum hydroxylase containing 1.6 mol of FAD, 7.3 mol of Fe, 8.3 mol of acid-labile sulphide and 1.3 mol of Mo per mol of enzyme.
(13) These complexes, as well as the low-pH form of the free enzyme, showed interaction of molybdenum with a single exchangeable proton.
(14) The influence of dietary molybdenum on esophageal carcinogenesis induced by N-methyl-N-benzylnitrosamine (2.5 mg per kg of body weight once a week for 20 wk s.c.) was studied in male F344 rats.
(15) Possible mammographic advantages of "trans-molybdenum" anodes (atomic number greater than ZMo) are decreased dose because the fluorescent radiation is more penetrating, and increased useful output; contrast degradation is known to be tolerable.
(16) This paper is a study of the effects of molybdenum on the experimental fluorine poisoning in rats and on sodium molybdate treatment of the F-stain teeth in children.
(17) The role of the molybdenum-containing enzymes aldehyde oxidase and xanthine oxidase in the generation of such free radicals was investigated by measuring alkane production (lipoperoxidation products) in isolated rat hepatocytes during ethanol metabolism.
(18) Moreover, high levels of molybdenum were found in isolated peroxisomal cores by atomic absorption spectroscopy, thus corroborating the association of the molybdenum-containing enzyme with the cores.
(19) The anaerobic enhancement of chlA expression is mediated via a mechanism that is distinct from the molybdenum cofactor effect.
(20) Following thiomolybdate administration, the concentration of copper in the liver was reduced, that of molybdenum increased and the concentration of copper and molybdenum in the kidney increased.
Molybdous
Definition:
(a.) Of, pertaining to, or containing, molybdenum; specif., designating those compounds in which molybdenum has a lower valence as contrasted with molybdic compounds.
Example Sentences:
(1) In the same way, using the anti-trimethylamine-N-oxide reductase serum, rocket immunoelectrophoresis analyses were able to show that the inducible apoenzyme is not regulated by the fnr gene product and that molybdate does not seem necessary for the synthesis or stabilisation of this enzyme.
(2) We adapted the pyrogallol red-molybdate method for total urinary protein to the Cobas Bio centrifugal analyzer.
(3) Phosphate, molybdate, glucose, cells, and anaerobic conditions are required.
(4) Whole-chain formate-nitrate reductase activity, assayed with formate as the electron donor and measuring the amount of nitrite produced, was restored to wild-type levels in the mutants by addition of 10(-4)m molybdate to the growth medium.
(5) All bisimidates tested, of an effective reagent length between 0.73 and 1.09 nm, gave comparable results in the cytosol prepared with or without molybdate ions, confirming that the latter were not responsible for the formation of the cross-linked 8S complexes.
(6) This stimulation was partially prevented by sodium molybdate.
(7) In an enzyme immunoassay for anti-Salmonella antibodies using glucose oxidase as the indicator enzyme, the molybdate-enhanced polyvinyl alcohol- and starch-glucose-iodide substrate systems were as sensitive as a conventional glucose oxidase assay system employing horseradish peroxidase as a secondary enzyme and a suitable hydrogen-donating chromogen.
(8) Addition of chloroform and molybdate caused an accumulation of cold acetate in large sediment cores and of [14C]acetate in small cores to which [14C]bicarbonate had been added.
(9) Treatment of intact GH1 cells with sodium molybdate inhibits the subsequent rate of nuclear accumulation of hormone-occupied glucocorticoid and estrogen receptors.
(10) Based on sucrose density gradient analysis of PR prepared and labeled in the presence of proteolysis inhibitors and sodium molybdate, the antibodies bound to a site on the intact undenatured PR, but failed to bind to partially degraded steroid-binding form of the receptor, suggesting that the antibody-binding domain is at or near a site sensitive to proteolysis.
(11) The sedimentation coefficients of both the converted receptors were affected by sodium molybdate, i.e., the receptors converted to a relatively smaller molecule in the presence of molybdate than in the absence of the reagent.
(12) This finding constituted the basis for calculating the number of antibodies bound to the molybdate-stabilized nonactivated GR complex, which has an Mr of 302 000 (302K).
(13) Identification of the immunoreactive receptor subunit by Western blotting demonstrated that kidney cytosol prepared in the presence of molybdate contained a major 94-kDa immunoreactive component which co-migrated with rat liver glucocorticoid receptor, while cytosol prepared in the absence of molybdate contained principally a 44-kDa immunoreactive species.
(14) In the presence of 0.4 M KCl and 50 mM molybdate, however, the hydrodynamic properties of androgen receptor can be correlated with receptor activation.
(15) The mathematical evaluation involving two separate effects of molybdate on receptors is illustrated.
(16) This paper is a study of the effects of molybdenum on the experimental fluorine poisoning in rats and on sodium molybdate treatment of the F-stain teeth in children.
(17) Hydrolysis of the synthetic peptide was not inhibited at concentrations of molybdate below 50 microM, and above this concentration the peptide precipitated.
(18) Glycerol gradient analysis of these proteins, with and without molybdate, indicated that the in vitro synthesised receptor fragments formed complexes with hsp90 as previously shown for the full-length rat glucocorticoid receptor.
(19) The enzyme was inhibited by ammonium molybdate, NaF and CuSO4 but not by tartrate and SH-reagents.
(20) Nitrate reductase (nar) A, B and E mutants of Escherichia coli with plasmids carrying Klebsiella pneumoniae nitrogen fixation (nif) genes reduced acetylene independently of added molybdate, but nar D mutants showed pleiotropic dependence on the concentration of added molybdate for expression of both nar and nif.